Threshing-machine.



F. S. HOLLEY. THRESHING MAGHINE. APPLICATION FILED $22123. 1908.

Patented Apr. 6, 1909.

WITNESSES 1m: zvormrs PETERS co., WASHINGTON, n, c.

new a F n n l fir lL El i THEE SEEKING-MACHINE Specification of Letters Patent.

Patented April 6, 1909.

Application filed September 23, 1908. Serial No. $54,372.

Be it known that l, FRANK S. lrlorrnr, citizen of the United States, residing at Stockton, in the county of San Joaquin and State of California, have invented new and useful Improvements in Threshing hia- To all whom it may comem: l i

chines of which the followin is a s ecific: i cation.

This 'nvention relates to threshers, harvesters and the like, and particularly to the feeding and threshing mechanism thereof.

An important ob ost of my invention is to provide a movable and yielding guard which 1 will prevent the material under treatment from unduly wearing away the housing of the nurcliine, will prevent a jam of grainstraw in the feed-house, and will permit such straw as may follow the cylinder around, to disentangle itself. It also allows convenient access to the threshing mechanism, without dismounting any permanent parts.

Otl' er objects will become apparent.

lily invention consists of parts, and. the construction and combination of parts, and will be more fully explained by reference to the accoineanyhig drawings, in which-the figure is a central section of the feed-house and cylinder of a thresher.

lrleretofore all threshing-machines of the undershot type, to my knowledge, have been provided with fixed bars and caps, called cut-offs. The former is located to the rear of the cylinder, while the cap is above, and both just clear the teeth of the cylinder. These cut-offs are rigid, and when a mass of straw becomes tangled in the teeth, instead of being able to free itself through centrifugal force, it is packed all the harder by the fixed caps, thus preventing a steady in-feed and causing a jam,

1 he cylinder 2 is located at the lower rear side of the feed-house 3, and receives grainladen straw from the feed-belt 4. T he rapidly revolving toothed cylinder, after having drawn the material through the concave 5, throws the straw and loosened grain to the cellor slat-belt 6 by which it is conveyed. to the separator, not here shown.

It frequently happens that grains and straw follow the cylinder, escaping the usual cut-elf, and are tangentially thrown oil and impact with considerable force, against the top of the feed-house, causing much damage. To prevent this, I provide a suitable means, here shown as a hanging plate or guard 7, adapted to be swung upwardly about the hinges 8 secured to the cross-framc 9. The lower end of the guard is arranged approximately over the center of the cylinder, and offers normally suilicient resistance to arrest the grain and prevent wear of the feed-house top and front. (lccasionally, long straw winds or packs around the cylinder, and in this instance the guard will yield, by swinging, to such extent Till allow the straw to pass and. gradually return to the feed side of the cylinder, and at the same time does not allow any grain to be thrown forcibly against the roof of the feed-house.

It is obvious that, by my construction, access may be had to the cylinder 0y simply opening the trap-door 10 and then swinging up the guard 7. This is not possible in any of this class of machines, as constructed with fixed posts and attachments, in the usual manner. Thus, I not only provide a more accessible machine, but also a cheaper one, by omitting the housing and frame timbers ordinarily used to support the parts, and providing a swinging or otherwise suitable guard mounted so as to be movable. Having thus described my invention, what I claim and desire to secure by Letters fat out is 1. In a threshingunachine, the combination with an under-shot cylinder, and feeding leans therefor, of a cutoff guard and stop having its lower end disposed substantially over the center of the cylinder, and proximate to the circle described by the cylinder teeth said guard and stop adapted to prevent the grain and straw being returned over the top of the cylinder and being hingedly se cured whereby itmay yield substantiallyin the direction of the travel of the upper part of said cylinder.

2. In a threshing-machine, the combination of a concave, an under-shot cylinder operable thereover, and feeding and strawcarrying means, of a yielding cut-off located above the cylinder in a plane between the feeding and straw carrying means and. having its lower end arranged in proximity to the circle described by the cylinder teeth,

said cut-off adapted to yield in an upward direction and serving to prevent the grain and straw being returned. over the top of said cylinder.

8. In a threshing-1nachine, the combination of a concave, an undershot cylinder 11.0

operable thereover, and feeding and strair carrying means, of an lncloslng housing having a fixed cut-off guard at the front, and l In testimony whereof I have hereunto set a, hinged, swinging guard suspended directly my hand in presence of two subscribing above and in proximity to the cylinder and witnesses.

adapted to prevent the grain and straw being 5 returned over the top of said cylinder, sai Witnesses:

guard adapted to yield in an upwardly and Y. S. JOHNSON,

forwardly direction. g A. F. HARRISON.

FRANK S. HOLLEY. 

